Spring-lubricator



M, JARMIE.

. SPRING LUBRICATOR.

APPLICATION FILED NOV. 19, 1919.

1,342, 1 72. Patented June 1, 1920.

E32 /J J 7k /7 1 3 J T? A7 a w m '[721/ nior MICHAEL UARMIE, OF EAST HAVEN, CONNECTICUT.

SPBING-LUBRIGA'IOR.

Specification of Letters Patent. Patented June it, 1929.

Application filed November 1a, 1919. Serial No. 339,221.

To all whom it may concern:

Be it known that I, MioHAEL JARMIE, a citizen of the United States, residing at East Haven, in the county of New Haven and State of Connecticut, have invented certain newxand""'"usefiil Improvementsin V .Spring-Lubricators, of which the following is a specificatiom'reference being bad therein to the accompanying drawings.

My invention relates to a new and useful spring lubricator, having more particular reference to mechanism of this type that is applied to a laminated spring for the purpose of providing a continuous supply of lubricant to the friction points between the several leaves of the spring.

It is the object of this invention, among other things, to provide a simple, inexpensive and easily applied device that will provide for the efiicient lubrication of the leaves of the spring and so designed and arranged that the entire pressure required to 1101 the device in place will bear upon the lubricating felt or wick only .at the edges thereof.

To these, and other ends, my invention consists in the spring lubricator, having certain details of construction and combinations of parts, as will be hereinafter described and more particularly pointed out in the claims. Referring to the drawings, in which like numerals of reference designate like parts in the several figures;

Figure 1 is an elevation of my new and improved device as applied to a laminated spring;

Fig. 2 is an end elevation thereof, partly in section and these upon line 22 of Fig. 1; o

Fig. 3 is a fragmentary sectional plan view of one of the plates, taken generally upon line 3--3 of Fig. 2.

Devices of this characterhavebeen heretofore-constructed so that the entire felt or wick in contact with the leaves of the spring is under pressure applied uniformly by the holding-plate or cover. The result of this is that the felt or wick in time becomes so packed and hardened by this pressure as to be of little or no value as a transmitting element for the lubricant and therefore requires frequent replacing. To offset.

this difficulty devices have been so designed that the plates overlap the top .and bottom of'thc spring so as to relieve somewhat the terior of the central portion 11,.

weight of the device and thepressure of I holding it. With this latter structure it is obvlous that pressure must be applied to the felt or wick as before and that while the overlapping portion of the plates at the top and bottom of the spring assists somewhat in supporting the device it is objectionable because two additional friction surfaces are added by each plate, and, no provision is .65

made for lubricating them.- i In my device I have overcome these an other objections to the'devices in the prior art. The parts of my device are so designed and constructed that pressure is applied to the wick or felt at only a limited portion of lts surface and around-its outer edges, the wick or felt therebetween not being subject to pressure and constructed ofmaterial of such weight and texture as to provide a lubricant transmitter of maximum efliciency. Referring-to the drawings, the numeral 10 designates one of the side or cover plates which are preferably constructed of a single piece of metal with a concaved central por.- 8 tion 11 terminating on two sides in, the flanges 12, from which project the ears 13, which are provided with openings 14 for the reception of the bolts 15 having the nuts 16 threaded thereon. Between the flanges 12 on the side plates 10 the sides 17 of the central portion 11 terminate on a plane with the inner face of the flanges and ears 13. Threaded into each of the plates 10 is an oilor grease cup 19 of standard construction, which provides a reservoir for the lubricant which enters the'chamber in the in- Within said chamber is a pad 18 of light woven felt or similar material so shaped as to be slightly thicker in the center between its ends and narrowing toward its outer edges, which is of uniform thickness as shown at 20 to extend underthe flanges 12 and the. bottomedges of the sides 17. In assem-, bling, the pad 18 is between theplate and springs 21, and 'as that portion thereof in the chamber in the central portion 11 is of slightly less thickness thanthe depth of the chamber, pressure is only applied to the pad at its outer edges under the flange 12-and the sides 17. By this construction, the holding pressure is taken entirely upon the outer edges of the pad and the intermediate portion performs its function solely as a lubrithereto through the oilcups 19. The more compact portion of the pad now being its outer edges, leakage of lubricant is prevented, a common and serious fault in the devices of the prior art.

There are minor changes and alterations that can be made Within my invention, aside from those herein suggested, and I would therefore have it understood that I do not limit myself to the exact construction herein shown and described, but claim all that falls fairly Within the spirit and scope of my invention.

Having described my invention, what I claim as new and desire to secure by Letters Patent, is:

1; In a device of the character described, the combination with companion plates; of means for securing the same-together upon opposite sides of a laminated spring; and a pad of felt or similar material for each of said plates lying between the spring and plates, the pressure contact of the plate upon said pads being applied solely around the outer edges thereof.

2. In a device of the character described,

the combination with companion plates, each of said plates having a recessed inner face; of means for securing the same together upon opposite sides of a laminated spring; and a pad of felt or similar material for each of said plates lying between the spring and plate, the pressure contact of the plate upon said pads being applied solely around the outer edges thereof by surrounding said recess.

3. In a device of the character described, the combination with companion plates; of means for securing the same together upon opposite sides of a laminated spring; a pad of felt or similar material for each of said plates lying between the spring and plate and held so that the outer edges thereof are under pressure and the intermediate portion free from pressure; and means for supplying a lubricant to that portion of said pad that is free from pressure.

- In testimony whereof, aflixed my signature.

MICHAEL JABMIE.

I have hereunto that portion of the inner face of said plate 

